Furnace-door-operating device.



No. 672,000. Patented Apr. l6, l90l. L. HARTEL.

FURNACE D003 OPERATING DEVICE.

(Application filed Fab. 7, 1901.)

(No Model.)

I UNITED STATES ATENT union.

LEWIS HARTEL, OF LODI, OHIO.

FURNACE-DOOR-OPERATING DEVICE.

SPECIFICATION forming part of Letters Patent N 0. 672,000, dated April16, 1901.

Application filed February 7, 1901. Serial No. 46.420. .110 model.)

To all whom it may concern;

Be it known that I, LEWIS HARTEL, a citizen of the United States,residing at Lodi, in the county of Medina and State of Ohio, haveinvented new and useful Improvements in Furnace-Door-Operating Devices,of which the following is a specification.

My invention relates to improvements indevices for opening and closingdoors for steam-boilers and furnaces; and it consists of the novelconstruction, arrangement, and combination of parts hereinafterdescribed, and pointed out in the appended claims.

In firing a locomotive-engine it is of importance to keep the furnacedoor closed as much as possible in order to. keep the draft fromentering the fire-box through the door; and the object of the presentinvention is to produce an efficient and practical device for openingand closing furnace-doors without using the hands of the operator. I

In the accompanying drawings, Figure 1 is a rear elevation of the deviceas it would appear applied to the front of an ordinary furnace with thedoor closed. Fig. 2 is a side elevation of the same. Fig. 3 is a sideelevation showing a more detailed view of the rearwardly-extendingbracket and spur-gear sectors. Fig. 4 is a detail view of the halfgears,&c.

Similar characters of reference indicate corresponding parts throughoutall the figures of the drawings.

1 denotes the furnace-door of the usual construction, to the right ofwhich there-is secured, by means of a downwardly-extending bracket 2, avertical shaft or pintle 3, having at its upper end a beveled half-gearat and provided at its lower end with a crank-arm 5, to the outer end ofwhich there is pivoted at 7 one end of the rod 6. At the other end ofthis rod 6 it is attached to the furnacedoor 1 by means of a bracket '8.

9 designates a horizontal rock-shaft journaled in suitable bearings ofthe brackets 2 and 13 and provided at one end with a halfgear 10 and atthe other with aspur-gear sector 11, which mesh and turn with thehalfgear 4 and the spur-gear sector 12, respectively. This spur-gearsector 12 is attached to the rearwardly-extending bracket 13, as shown,and to the arms of the spur-gear secjtor 12 there is attached the upperend of a two-part rod 14, secured at its lower end to a foot-lever 15.This rod 14. is made in two parts a and I), having their contiguous endsoverlapping each other and provided with a slot cand an adjustable bolt01 for regulating the length of the same. This foot-lever 15 ispivotally attached at its inner end to a bracket 16, the lower arm ofwhich is attached to the cab-floor by means of the bolts 6. The upperarm of this bracket simply abuts against the front wall of the furnace,and at the upper end of this arm there is formed an eye, as shown, towhich there is attached a stiff spiral spring 17, secured at its lowerend to the foot-lever 15. this spring in its normal position will holdthe parts in the position shown in the drawings, thus securely holdingthe door shut and rendering the use of a door-latch unnecessary.

The end of the rod 6 may be readily disengaged from the bracket 8 of thedoor when in case of breakage of some part of the device or for someother cause it is not desired to use the same or when it is desired toleave the furnace-door open to allow the furnace to cool.

From the foregoing description, taken in connection with the drawings,the operation of my invention will be readily understood. The fireman,holding the shovelful of coal in both hands as he approaches the door,places his foot upon the lever, depressing the same and swinging thedoor open, and after discharging the shovel into the furnace the door isimmediately closed by the operation of the coiled spring and heldsecurely closed until again purposely opened. In this manner no time islost in opening and closing the door, which remains open at each firingonly long enough to enable the fireman to discharge his shovelful ofcoal into the furnace, thus saving fuel as Well as time and labor.

Various changes in the form, proportion, and the minor details ofconstruction may be resorted to without departing from the principles orsacrificing any of the advantages of this invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. A furnace-door-operating device, the

It will be observed that same consisting of a shaft attached to the wallof the fire-box and provided at one end with a beveled half-gear and atthe other with a crank-arm, an arm connecting said crankarm with thefurnace-door, a rock-shaft arranged in suitable bearings attached to thewall of the fire-box and having at one end a beveled half-gear and atthe other a spurgear sector, a spur-gear sector mounted adjacent to thesaid spur-gear sector and meshing therewith,and a pivotal ly-mountedspringactuated foot-lever connected with the said spur-gear sector bymeans of a rod whereby a rocking motion is given to the same when theleveris oscillated, substantially as shown, and for the purpose setforth.

2. In a furnace-door-operating device, the combination with thefurnace-door, of a vertical shaft attached to the front wall of thefire-box and having at its top a beveled halfgear and provided at itslower end with a crank-arm, an arm pivotally connecting said crank-armwith the furnace-door, a horizontal rock-shaft arranged in suitablebearings above the said furnace-door and having at one end a beveledhalf-gear and at the other a spur-gear sector, a spur-gear sectorpivotally mounted adjacent to the said spur-gear sector and meshingtherewith, an oscillating foot-lever pivotally mounted beneath the saidspur-gear sector and connected therewith by means of a rod whereby arocking motion is given to the same when the lever is oscillated, and aspring attached to the foot-lever whereby the same is normally held inan elevated position, substantially as described and for the purpose setforth.

In testimony whereof I have hereunto affixed my signature to thisspecification in the presence of two subscribing witnesses.

LEWIS HAR'IEL.

Witnesses:

O. C. BILLMAN, E. E. ANDREWS.

